Dont mean to thread hijack about Grip Edge's individual company warranty, but it sounds like you got that resolved. So let's discuss RBRT warranties in general since they seem like disposable tools.
I see that HF now sells some RBRT sockets.
Quinn Branded
Since they are cheap, and HF allegedly has a decent warranty, I am thinking my strategy might be to buy two sets. And abuse them, hammer them on if needed. The second set on hand in case I break one and have a second bolt of the same size I need taken out. So it avoids having to stop work to go to HF.
$30 per set of SAE or Metric. Maybe I buy two Metric and one SAE. With coupons, would be around $70. I could probably hammer a similar sized SAE onto a metric for a third socket of each size.
I'm guessing these are cheap steel that won't last more than a few times regardless of how you treat them. I think you'd actually want them in cheap steel that you could hammer onto the fastener, let the socket deform to the fastener without damaging it. Basically a no-weld way of fastening a 3/8" square female hole to the end of the fastener that you can put an impact wrench or breaker bar on.
I could see using a 3/8" drive hand impact driver like one of these to hammer some Quinn "RBRT" sockets on: